The City is alive with speculation that BT’s attempts to buy its way back into the mobile phone market could spark a series of takeovers in a sector where converging technology is changing the rules of the game. By Juliette Garside

Roger Dean, the famed artist, designer, architect, and publisher, turns 70 on 31 August. Featuring some of his greatest fantasy landscapes and designs for artists such as Yes and Asia, let’s celebrate with a selection of some of his most brilliant images